'2016 Sweepstakes' Electric Challenge Twin

Started by sanjayrai55, October 30, 2016, 06:04:58 AM

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sanjayrai55

This is a twin motor 61"span Electric Powered low wing monoplane

It is being adapted to Corro instead of the original Balsa

Plans here: http://www.outerzone.co.uk/plan_details.asp?ID=7334


sanjayrai55


sanjayrai55


sanjayrai55


sanjayrai55


sanjayrai55


sanjayrai55


sanjayrai55


sanjayrai55


PRANAVK09

Nice build sir   {:)}
Your builds in  coro  are with great precision... :hatsoff:

sanjayrai55


manojswizera

well going sir,
those are very powerful motors, i have one of them.
the build is going to be heavy ?
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

sanjayrai55

Thanks Manoj

The design says 6 lbs 12 oz, or about 2 Kg

I'm targetting 2.1-2.2 Kg

That will give me a Wing Loading of 17 oz/sq ft, or a WCL (Wing Cube Loading) of 8.2; sport model

Suggested suitable values for WCL are:

Gliders   -   under 4
Trainers   -   6 to 7
Aerobatic   -   9 to 10
Scale   -   12 to 13
Racers   -   15 and over

sanjayrai55

Sorry, typo. As per design, weight is 3 Kg

Sent from my Redmi Note 3 using Tapatalk

rastsaurabh

Sir,
Its coming out good. Fuse will be red / white ?

What is the propeller size you are planning on this.
And did you find a way to have RPMs same for both motors ?

regds
Saurabh

sanjayrai55

Thank you Saurabh

Fuse will be blue,as that is the only thicker corro I have ;)
I will be using 10 X 4.5 contra-rotating e-props

I have used two independent ESC's, powered by a single LiPo. I hope that will be reasonably accurate. The ESCs are the same brand/capacity etc.

sanjayrai55


K K Iyer

Quote from: sanjayrai55 on November 02, 2016, 05:43:33 PM
I have used two independent ESC's, powered by a single LiPo. I hope that will be reasonably accurate. The ESCs are the same brand/capacity etc.

That set me thinking...
Two similar ESCs, or one double capacity ESC to both motors?
Which would be better?
I don't have the theoretical knowledge to answer that.

I'm sure you'll try both and give us a real world answer...

taitil

Yes Pranavbhai..Sanjay Sir is the Master of making coro plane.. I have learn some techniques from him :salute: :salute: :salute:

kiran rc

Quote from: K K Iyer on November 02, 2016, 08:10:08 PM
Two similar ESCs, or one double capacity ESC to both motors?
Which would be better?
A single ESC can be used to drive two motors. The only advantage of having two ESC's is that one can use the difference in thrust of the two engines to make turns.
(Using dual rates). Practically, one esc would be just fine.

K K Iyer

Quote from: kiran rc on November 02, 2016, 10:56:45 PM
The advantage of having two ESC's is that one can use the difference in thrust of the two engines to make turns.
(Using dual rates)

Huh?  :headscratch:


sanjayrai55

Quote from: taitil on November 02, 2016, 08:31:24 PM
Yes Pranavbhai..Sanjay Sir is the Master of making coro plane.. I have learn some techniques from him :salute: :salute: :salute:

Thanks Taitil-bhai :D

sanjayrai55

Quote from: K K Iyer on November 02, 2016, 11:26:26 PM
Quote from: kiran rc on November 02, 2016, 10:56:45 PM
The advantage of having two ESC's is that one can use the difference in thrust of the two engines to make turns.
(Using dual rates)

Huh?  :headscratch:



Would need dual throttles. Or some complicated control system/mix

sanjayrai55


sanjayrai55